Gaseous exchange in insects 1.5 / 5 based on 2 ratings ? BiologyBiological molecules, organic chemistry and biochemistryASWJEC Created by: sophiee96Created on: 04-03-13 15:01 what is a common problem all terrestrial organisms face? that water evaporates from the body surface - dehydration 1 of 12 what is the problem with a thin, permeable gas exchange surface with a large surface area? it conflicts with the need to save water 2 of 12 what is an insects exoskeleton covered with? a cuticle 3 of 12 what is the benefit of having an exoskeleton covered with a cuticle? reduces water loss 4 of 12 why can't insects use their body surfaces to exchange gases by diffusion? because they have a relatively low surface area to volume ratio 5 of 12 What are the paired holes on the side of insects called? Spiracles 6 of 12 What do spiracles lead into? A system of chitin lined air-tubes called tracheae 7 of 12 Spiracles can open and close, why is this good? Allows gaseous exchange and reduces water loss 8 of 12 How to resting insects take in oxygen and remove carbon dioxide? Through diffusion 9 of 12 What does movements of the abdomen during activety do? Ventilates the tracheae 10 of 12 What are the ends of the tracheal branches called? Tracheoles 11 of 12 Where does gas exchange take place in insects? On the tracheoles 12 of 12
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